<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="描述信息" prop="carouselName">
        <el-input
          v-model="queryParams.carouselName"
          placeholder="请输入名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>


    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['carousel:carousel:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['carousel:carousel:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['carousel:carousel:remove']"
        >删除</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table :border="true" v-loading="loading" :data="carouselList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="描述信息" align="center" prop="carouselName" />
      <el-table-column label="封面图片" align="center" prop="carouselCover" width="100">
        <template slot-scope="scope">
          <image-preview :src="scope.row.carouselCover" :width="50" :height="50"/>
        </template>
      </el-table-column>
      <el-table-column label="海报图片" align="center" prop="carouselPoster" width="100">
        <template slot-scope="scope">
          <image-preview :src="scope.row.carouselPoster" :width="50" :height="50"/>
        </template>
      </el-table-column>
      <el-table-column label="是否展示" align="center" prop="carouselShow" >
        <template slot-scope="scope">
          <el-switch
            v-model="scope.row.carouselShow"
            active-color="#67C23A"
            inactive-color="#909399"
            key="top"
            :active-value="1"
            :inactive-value="0"
            @change="handleTopChange(scope.row)"
          ></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="顺序" align="center" prop="carouselRank" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['carousel:carousel:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['carousel:carousel:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改轮播图对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="描述信息" prop="carouselName">
          <el-input v-model="form.carouselName" placeholder="请输入名称" />
        </el-form-item>
        <el-form-item label="封面图片" prop="carouselCover">
          <open-image-upload v-model="form.carouselCover"/>
        </el-form-item>
        <el-form-item label="海报图片" prop="carouselPoster">
          <open-image-upload v-model="form.carouselPoster"/>
        </el-form-item>
        <el-form-item label="展示顺序" prop="carouselRank">
          <el-input-number v-model="form.carouselRank" :min="1" :max="10000" label="展示顺序"></el-input-number>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCarousel,changeShow, getCarousel, delCarousel, addCarousel, updateCarousel } from "@/api/carousel/carousel";


export default {
  name: "Carousel",

  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 轮播图表格数据
      carouselList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        carouselName: null,
        carouselCover: null,
        carouselPoster: null,
        carouselShow: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        carouselName: [
          { required: true, message: "名称不能为空", trigger: "blur" }
        ],
        carouselCover: [
          { required: true, message: "封面不能为空", trigger: "blur" }
        ],
        carouselPoster: [
          { required: true, message: "海报不能为空", trigger: "blur" }
        ],
        carouselShow: [
          { required: true, message: "是否展示不能为空", trigger: "blur" }
        ],
        carouselRank: [
          { required: true, message: "顺序不能为空", trigger: "blur" }
        ],
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    // 置顶
    handleTopChange(row) {
      let text = row.carouselShow === 1 ? "展示" : "取消展示";
      this.$modal
        .confirm('确认要"' + text + '"吗？')
        .then(function () {
          return changeShow({carouselId: row.carouselId, carouselShow: row.carouselShow});
        })
        .then(() => {
          this.getList();
          this.$modal.msgSuccess(text + "成功");
        })
        .catch(function () {
          row.carouselShow = row.carouselShow === 0 ? 1 : 0;
        });
    },
    /** 查询轮播图列表 */
    getList() {
      this.loading = true;
      listCarousel(this.queryParams).then(response => {
        this.carouselList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        carouselId: null,
        carouselName: null,
        carouselCover: null,
        carouselPoster: null,
        carouselShow: null,
        carouselRank: null,
        createTime: null,
        createBy: null,
        updateTime: null,
        updateBy: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.carouselId)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加轮播图";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const carouselId = row.carouselId || this.ids
      getCarousel(carouselId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改轮播图";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.carouselId != null) {
            updateCarousel(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCarousel(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const carouselIds = row.carouselId || this.ids;
      this.$modal.confirm('是否确认删除轮播图编号为"' + carouselIds + '"的数据项？').then(function() {
        return delCarousel(carouselIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('carousel/carousel/export', {
        ...this.queryParams
      }, `carousel_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
